-18=7+4(n+2)

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Solution for -18=7+4(n+2) equation:


Simplifying
-18 = 7 + 4(n + 2)

Reorder the terms:
-18 = 7 + 4(2 + n)
-18 = 7 + (2 * 4 + n * 4)
-18 = 7 + (8 + 4n)

Combine like terms: 7 + 8 = 15
-18 = 15 + 4n

Solving
-18 = 15 + 4n

Solving for variable 'n'.

Move all terms containing n to the left, all other terms to the right.

Add '-4n' to each side of the equation.
-18 + -4n = 15 + 4n + -4n

Combine like terms: 4n + -4n = 0
-18 + -4n = 15 + 0
-18 + -4n = 15

Add '18' to each side of the equation.
-18 + 18 + -4n = 15 + 18

Combine like terms: -18 + 18 = 0
0 + -4n = 15 + 18
-4n = 15 + 18

Combine like terms: 15 + 18 = 33
-4n = 33

Divide each side by '-4'.
n = -8.25

Simplifying
n = -8.25

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